The volatile oil contents of the pinus tabulaeformis carr. pine needles with Anshan,Shenyang,Tieling,Jinzhou and chaoyang are 1.7%,1.7%,1.4%,1.7% and 1.4% respectively.

• 测得鞍山、沈阳、铁岭、锦州和朝阳等地松针中挥发油的含量分别为 1.；7%25、1